Juicer for fruit halves having means for inverting the sides of the halves



Feb. 6, 1951 J H KNAPP 2,540,891

JUICER FOR FRUIT HALvEs HAVING MEANS FOR INVERTING THE SIDES OF THEHALVES Filed July 22, 1946 2 Sheets-Sheet 1 IN V EN TOR. a/weph map aHTTGK/VEE. 2 I

Feb. 6, 1951 J. H. KNAPP 2,540,891

. JUICER FOR FRUIT HALVES HAVING MEANS FoR INVERTING THE SIDES OF THEHALVES Filed July? 22, 1946 2 Sheets-Sheet 2 INVENTOR.

Jose /7 HEM :50

Patented Feb. 6, 1951 JUICER FOR FRUIT HALVES HAVING MEANS FOR INVERTINGTHE SIDES OF THE HALVES Joseph H. Knapp, Kansas City, M0,, assignor, by

direct and mesne assign Kansas City, Mo.,

ments, to 0. Earl Hbvey, trustee Application July 22, 1946, Serial No.685,464

, 2 Claims. 1

This invention relates to citrus fruit juicers of the character that maybe employed domestically or commercially at soda fountains, restaurantsor the like where the juice of citrus fruits is to be removed and servedwithout storing and the primary aim of the invention is to provide amechanical juicer of the aforesaid character that will be effective inremoving all of the juice from the fruit without crushing the peel andthereby causing objectionable traces of peeling oil to permeate thejuice which is to be served.

One of the most important objects of this invention is the provision ofa juicer of the aforementioned type wherein a fruit half may be treatedand passed along a specially contoured surface by a rotor of a form thatwill cooperate with the said specially contoured surface in reversingthe position of the peel as it moves through its path of travel, whichreversal insures that the objectionable oil containing portion of thepeel is isolated entirely from the parts of the juicer over which thejuice is caused to flow.

Further objects of the invention are to provide a juicer wherein a motordriven rotor may be employed to motivate a portion of a citrus fruitover a surface within a cavity that collects the juice to remove all ofthe juice of the citrus fruit part without rupturing the skin or rindand without removing from the said fruit an objectionable amount offibrous substance constituting the natural partitioning; to provide ajuicer that will be quick in operation and effective in action becauseof the employment of motor driven means for actuatin the rotor; and toprovide a juicer that will be sanitary, easily kept clean, attractive inappearance and strong despite its pleasing lines of appearance.

Other aims of the invention will appear during the course of thefollowing specification, referring to the accompanying drawings,wherein:

Fig. 1 is a front plan view of a citrus fruit juicer made in accordanceWith the present invention.

Fig. 2 is a rear elevational view thereof.

Fig. 3 is a top plan view of the juicer with parts broken away to revealimportant structures.

Fig. 4. is a side elevational view with portions of the juicer shown insection; and

Fig. 5 is a detailed fragmentary sectional view taken on line V-V ofFig. 4.

It is well known in the fruit juicing art that such grinding actions ashave heretofore taken place in citrus fruit juicers, presents anobjection has for its primary aim to provide a citrus fruit juicer thatwill effectively and positively remove all of the desirable juices fromthe fruit without mingling therewith any of the oils of the rind andwithout grinding from within the rind any part of the objectionablefibrous matter.

In the form of the invention chosen for illustration, the numeral I tdesignates a body provided with a cavity [2 for receiving the fruit tobe juiced and a rotor [4 which is'dispose'd within cavity 12 to act in amanner more fully hereinafter set down. i

The cavity 12 is formed in the body I0 so the. its inner face [6 is bothlongitudinally and. transversely arched. The inner surface of body I0forming cavity [2 is, therefore, capable of cooperating with rotor I 4,which incidentally is substantially spherical in form, in actuallytuming inside out the citrus fruit half l8 which is fed into the cavityl2 in the manner illustrated in Fig. 4.

Rotor i4 is pivotally mounted in bearings 20 and 22 onbody l0 and thecross-sectional area of cavity [2 progressively decreases as the rotorl4'is approached from the ends of the cavity.

A hump 24 on body It) extends upwardly and inwardly toward. rotor l4 andis disposed at the point shown in Fig. 4 with respect to the rotor. Anumber of juice outlet openings or ports 26 are formed through the bodyIt and communicate with cavity 12. It is through these openings 23 thatthe juice is dropped when the machine is in operation. Body II] issupported by a pair of legs 23 at the end of the juicer where the citrusfruit half 18 is introduced and. a leg 3B is disposed at the oppositeend of body If).

A swingable cover 32 is bifurcated and hinged on a shaft 33 that is, inturn, supported by sockets 34 on legs 28 and this cover 32 is formed tocompletely enclose rotor l4 when the machine is in operation. Body I iiis provided with a loop 31 that is rotatably hooked over the shaft 33.The end of cover 32 opposite to its hinge connection with body I0 is cutaway as at 35 to cooperate with lip 36 in allowing the rind or skin ofthe citrus fruit half l8 to be forced out of the machine by rotor l4with cover 32 in a closed condition. Rotor [4 has a number of nodules orgripping elements 38 thereon to cooperate with the inner transverselyand longitudinally arched surface I6 in drawing the fruit half l8 fromone side of rotor I4 to the other.

Rotor It has a ball and socket connection at bearing to allow auniversal movement while the diametrically opposite side of rotor 14 hasa slotted ball 49 engaged by a pin 42 carried in bearing 22. This pinand ball 42 and are eccentric to the axis of rotation of bearing 22 andwhen the bearing 22 is rotated about the axis of pintle M, the rotorwill revolve about an axis extending between the balls thereof and willbe shifted from the position shown in full lines of Fig. 3 to theposition shown in dotted lines thereof. As this shifting occurs, therotor I4 is moved toward and from the surface [6 within cavity 12 and,as illustrated in Fig. 4, when the citrus fruit half is is first placedin cavity 12, rotor 54 is in the dotted line position; as the rotor isturned and tipped about its axis of rotation the citrus fruit half I8 ispressed against the surface l6 and caused to arch around the outerperiphery of rotor l4 and thereby positively reverse its condition. Inso causing the citrus fruit half I8 to reverse its condition, the rotor14 and transversely arched surface It cooperate and as such actionoccurs, all of the juices of the fruit are forced therefrom. Any oilsthat may be squeezed from the rind are collected within the cupshapedreversed half of the fruit I?) and carried from the machine therein.

Bearing 22 is rotated by pinion 46 and worm 68. This worm A9 isconnected to a motor 50 through the medium of a suitable speed reducer52 and the motor speed reducer, bearing and worm and pinion are allconfined within a housing 54 carried by body [0.

As shown in Fig. 4, leg 30 is provided with a cavity 55 for slidablyreceiving a tubular sleeve 56. A ball 58 at the outermost end of sleeve55 is received by a socket 60 in body H]. A spring 62 in sleevefifibears against the bottom of cavity 55 to yieldably hold body It] biasedtoward rotor 14, as

the operator holds the cover 32 downwardly with .his hand.

'When the fruit half i8 starts beneath rotor 14, hump 2 t enters thecentral portion of the fruit half iii to insure that even pressureoutwardly or Y radially from rotor I4 is exerted until the first actionof turning the fruit half l8 inside out is completed. It has been foundthat the double 'movement on the part of rotor l4, i. e., a rotarymovement and a tipping action about the axis of rotation, together withthe form of surface l6 within cavity l2 will positively act upon thecitrus fruit half [8 to accomplish all of the objects of this inventionand while fruit juicers having physical characteristics different fromthose shown and described may be made, it is believed that thesespecific elements are salient and important and must be included.

Having thus described my invention, what I claim as new and desire 'tobe secured by Letters Patent is: V

1. Ina citrus fruit juicer, a body provided with a cavity for receivingthe fruit to be juiced; and a rotor in the cavity formed to press thefruit against the surface of the body forming the said cavity and todraw the fruit over the said surface; said rotor having a stationarybearing and an opposed rotating eccentric supporting the same formovement toward and from the said surface as the rotor is rotated.

2. A citrus fruit juicer of the kind described, comprising a bodyprovided with a cavity for receiving the fruit to be juiced; a rotor inthe cavity formed to press the fruit against the surface of the bodyforming the said cavity and to draw the fruit overthe said surface; andmeans to rotate the rotor, said rotor having a pair of opposed shaftssupporting the same, and a rotating eccentric on one of said shafts forrevolving the rotor through a circular path of travel on the other shaftas the rotor is rotated.

JOSEPH H. KNAPP.

REFERENCES CITED The following references are of recordin the file oith1s patent:

UNITED STATES PATENTS Number Name Date 785,727 Gilchrist Mar. 28, 19051,241,307 Tompkins Sept. 25, 1917 1,600,882 Jacobson Sept. 21,19261,966,978 Estrada et a1 July 17, 1934 1,970,274 Brown Aug. 14, 19341,998,705 Bradley et a1. Apr. 23, 1935 2,212,925 Polk, Sr. et a1. Aug.27, 1940 2,222,791 Wentorf Nov. 26, 1940 FOREIGN PATENTS V 7 NumberCountry Date 29,618 Germany Dec. 1, 1884

